Thermally stable and strongly emitted CPL in Eu(D-facam)3 hybrid solid with alkylammonium salt
Thermally stable and strongly emitted CPL in Eu(D-facam)3 hybrid solid with alkylammonium salt
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Eu(D-facam)3 与烷基铵盐杂化固体中热稳定且强烈发射的 CPL
DOI：
10.1039/d2tc04670a
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发表时间：
2023
期刊：
影响因子：
--
通讯作者：
Kazuki Nakamura and Norihisa Kobayashi
中科院分区：
文献类型：
--
作者：
Ziying Li;Kazuki Nakamura and Norihisa Kobayashi
制备了一种新型的铕基杂化材料Eu（D-facam）3-TMAOAc（四甲基乙酸铵），该材料具有超高发光、优异的圆偏振性能和优异的热稳定性。从发光性质和能量传递过程研究了其物理性能。与Eu（D-facam）_3相比，Eu（D-facam）_3-TMAOAc具有更强的圆偏振性和更明亮的发光。此外，Eu（D-facam）3-TMAOAc即使在200 °C热处理24小时后也很好地保持了其结构和发光性质，而Eu（D-facam）3迅速分解。通过TG分析、元素分析、ESI-MS、PXRD和FT-IR等手段对Eu（D-facam）3-TMAOAc进行了表征。发现TMAOAc与Eu（D-facam）3以1：1的比例充当双齿桥连接体。 这种配位结构有助于Eu（D-facam）3-TMAOAc优异的物理性能和热稳定性。此外，Eu（D-facam）3-TMAOAc在普通有机溶剂中表现出很高的溶解度，在固态和溶液状态下都能保持其优异的发光性能。
A novel europium-based hybrid material, Eu(D-facam)3-TMAOAc (tetramethylammonium acetate), with ultra-high luminescence, excellent circular polarization and remarkable thermostability was prepared. Its photophysical performance was studied based on the luminescence properties and energy transfer process. Compared to Eu(D-facam)3, Eu(D-facam)3-TMAOAc exhibited much brighter luminescence and stronger circular polarization. Additionally, Eu(D-facam)3-TMAOAc well retained its structure and luminescence properties even after heat treatment at 200 °C for 24 hours, whereas Eu(D-facam)3 rapidly decomposed. Eu(D-facam)3-TMAOAc was characterized by TG analysis, elemental analysis, ESI-mass spectrometry, PXRD, and FT-IR spectroscopy. It was found that TMAOAc acted as a bidentate bridge linker with Eu(D-facam)3 at a 1 : 1 ratio. This coordination structure contributed to the excellent photophysical properties and thermal stability of Eu(D-facam)3-TMAOAc. Furthermore, Eu(D-facam)3-TMAOAc showed a high solubility in common organic solvents, and it could maintain its outstanding luminescence properties in solid as well as solution states.